Olaplex | No 4P Blonde Enhancer Toning Shampoo + No 5P Blonde Enhancer Toning Conditioner Duo [33.8 oz]Leave dull, dry, brassy blondes and greys in the past. The future of blonde is high def brightness and soft, shiny, hydrated hair. No 4P + No 5P Blonde Enhancer Toning Shampoo + Conditioner is formulated with micro fine pigments in a root to tip formula that locks in allover brightness, neutralizes yellow tones, and nourishes every inch without weighing hair down at the roots. VALUE SIZE: 33. 8 oz Bottles